Calculator link format

Open any calculator with your values already filled in. Put the link on a datasheet, a product page, an application note or a work instruction: one click, and the engineer sees the calculation for your part, checked against the standards.

Rules

A link is the calculator's address with parameters: https://sensorcatalog.com/tools/<calculator>/?<parameter>=<value>&…. For example, the NTC divider for a 10 kΩ, B = 3435 K thermistor:

https://sensorcatalog.com/tools/ntc-voltage-divider-calculator/?r0=10000&b=3435

Numbers use a dot as the decimal separator, with no thousands separators and no unit: r0=10000, not r0=10k or r0=10,000. The unit is the one listed for the parameter.
Temperatures are always in °C, whatever unit the visitor has chosen; the calculator converts them for display.
Choices take one of the listed values exactly, e.g. r0=1000 for a PT1000 in the PT100 calculator.
Parameters you leave out take the default listed below, so the same link always shows the same calculation. Unknown parameters and values outside the list are ignored; that field keeps its default.
Two-way calculators (marked ⇄): give one side of the pair, e.g. a temperature or a resistance. The other side is computed.
Languages: the same parameters work on every language version, e.g. /de/tools/…, /ja/tools/….
Embedding: the same parameters work on /embed/<calculator>/; see embed a calculator.
Stability: parameters are never renamed or removed; new ones may be added. Every build of the site checks all 251 parameters against a frozen list, so a link printed in a datasheet today keeps working.
Machine-readable: the same tables as JSON at /link-format.json.

Values that are physically impossible are rejected by the calculator, which then shows why. Everything else is calculated as given: check your link once in the browser.

Parameter	Field	Takes	Default
`lrv`	Value at 4 mA	number	`0`
`urv`	Value at 20 mA	number	`10`
`unit`	Unit	text	`bar`
`out`	Output	one of the values listed `lin` Linear `sqrt` Square root (flow)	`lin`
`i` ⇄	Loop current	number in mA	`12`
`p` ⇄	Output	number in %	`50`
`v` ⇄	Process value	number in bar	`5`
`sig`	Signal	one of the values listed `4-20` 4–20 mA `0-20` 0–20 mA `0-10v` 0–10 V `2-10v` 2–10 V `0-5v` 0–5 V `1-5v` 1–5 V	`4-20`

Parameter	Field	Takes	Default
`vs`	Supply voltage	number in V	`24`
`vmin`	Transmitter minimum	number in V	`10.5`
`imax`	Maximum loop current	number in mA	`22`
`vx`	Other drops (optional)	number in V	`0`
`rl`	Load resistance (total)	number in Ω	`250`
`len`	Cable length (one way)	number in m	`300`
`lu`	Length unit	one of the values listed `m` Metres `ft` Feet	`m`
`a`	Conductor size (copper)	one of the values listed `0.5` 0.5 mm² `0.75` 0.75 mm² `1` 1.0 mm² `1.5` 1.5 mm² `2.5` 2.5 mm² `0.205` AWG 24 (0.205 mm²) `0.326` AWG 22 (0.326 mm²) `0.518` AWG 20 (0.518 mm²) `0.823` AWG 18 (0.823 mm²) `1.31` AWG 16 (1.31 mm²)	`0.75`
`tc`	Cable temperature (optional)	number in °C	`20`

Parameter	Field	Takes	Default
`mode`	Pulse source	one of the values listed `flow` Flow meter `enc` Encoder	`flow`
`k`	K-factor	number in pulses/L	`100`
`q`	Flow rate	number	`30`
`qu`	Unit	one of the values listed `L/min` `L/s` `m³/h` `US gpm`	`L/min`
`ppr`	Pulses per revolution	number in PPR	`1024`
`mult`	Decoding	one of the values listed `1` ×1 `2` ×2 `4` ×4	`4`
`rpm`	Speed	number in rpm	`3000`
`mm`	Travel per revolution (optional)	number in mm	empty
`gate`	Gate time	number in s	`1`
`fmax`	Counter input maximum (optional)	number in Hz	empty

Parameter	Field	Takes	Default
`mode`	Direction	one of the values listed `d` Registers → value `e` Value → registers	`d`
`regs`	Register values (space or comma between registers)	text	`0x4120 0x0000`
`fmt`	Entered as	one of the values listed `hex` Hex `dec` Decimal	`hex`
`type`	Data type	one of the values listed `u16` UINT16 `i16` INT16 `u32` UINT32 `i32` INT32 `f32` FLOAT32 `u64` UINT64 `i64` INT64 `f64` FLOAT64	`f32`
`scale`	Scale factor (optional)	number	`1`
`off`	Offset (optional)	number	`0`
`unit`	Unit (optional)	text	empty
`val`	Value	number	`10`
`addr`	Reference or address (40001, 400001 or a protocol address)	text	`40001`

Parameter	Field	Takes	Default
`bits`	Resolution	number in bit	`16`
`vlo`	Input range from	number in V	`0`
`vhi`	Input range to	number in V	`2.5`
`gain`	Amplifier gain	number in V/V	`128`
`nf`	Noise-free resolution (optional)	number in bit	empty
`slo`	Output at range start	number in mV	`0`
`shi`	Output at range end	number in mV	`10`
`mlo`	Measuring range from	number	`0`
`mhi`	Measuring range to	number	`100`
`unit`	Unit	text	`N`

Parameter	Field	Takes	Default
`r`	Resistor	number in Ω	`1000`
`c` ⇄	Capacitor	number in nF	`100`
`f` ⇄	Corner frequency	number in Hz	`1591.5`
`n`	Stages	one of the values listed `1` `2` `3` `4`	`1`
`fs`	Sample rate	number in Hz	`10000`
`bits`	Resolution	number in bit	`12`
`fsig`	Signal frequency (optional)	number in Hz	`100`
`fhum`	Interference frequency (optional)	number in Hz	`50`

Parameter	Field	Takes	Default
`g`	Target gain	number in V/V	`100`
`k`	K in G = 1 + K / RG (from the datasheet)	number in kΩ	`49.4`
`ser`	Resistor series	one of the values listed `E24` `E96`	`E96`
`tol`	Resistor tolerance	number in %	`0.1`
`slo`	Input at range start	number in mV	`0`
`shi`	Input at range end	number in mV	`20`
`vref`	Reference (REF pin)	number in V	`0.5`
`vneg`	Negative supply	number in V	`0`
`vpos`	Positive supply	number in V	`5`
`sw`	Output swing to rails	number in V	`0.1`

Parameter	Field	Takes	Default
`by`	Given as	one of the values listed `rating` Rating `r` Resistance	`rating`
`r`	Resistance	number in mΩ	`0.75`
`ra`	Rated current	number in A	`100`
`rv`	Rated voltage drop	number in mV	`75`
`i`	Current	number in A	`50`
`imax`	Highest current	number in A	`100`
`tol`	Tolerance	number in %	`0.5`
`tc`	Temperature coefficient (optional)	number in ppm/K	`50`
`dt`	Temperature rise (optional)	number in K	`40`
`vfs`	Amplifier / ADC full-scale input (optional)	number in V	empty
`bits`	ADC resolution (optional)	number in bit	empty

Parameter	Field	Takes	Default
`isec`	Rated secondary current	one of the values listed `1` 1 A `5` 5 A	`5`
`rated`	Rated burden	number in VA	`5`
`dev`	Devices (sum of their burdens)	number in VA	`1.5`
`len`	Cable length (one way)	number in m	`15`
`lu`	Length unit	one of the values listed `m` Metres `ft` Feet	`m`
`area`	Conductor size (copper)	one of the values listed `0.5` 0.5 mm² `0.75` 0.75 mm² `1` 1.0 mm² `1.5` 1.5 mm² `2.5` 2.5 mm² `0.205` AWG 24 (0.205 mm²) `0.326` AWG 22 (0.326 mm²) `0.518` AWG 20 (0.518 mm²) `0.823` AWG 18 (0.823 mm²) `1.31` AWG 16 (1.31 mm²)	`2.5`
`tcab`	Cable temperature (optional)	number in °C	`20`
`rct`	Secondary winding resistance (optional)	number in Ω	empty
`alf`	Accuracy limit / security factor (ALF or FS)	number	empty

Parameter	Field	Takes	Default
`cap`	Capacity	number in mAh	`2400`
`use`	Usable share (cut-off, temperature, ageing)	number in %	`80`
`sleep`	Sleep current	number in µA	`5`
`act`	Measuring current	number in mA	`10`
`tact`	Measuring time	number in ms	`100`
`tx`	Transmit current	number in mA	`40`
`ttx`	Transmit time	number in ms	`50`
`int`	Interval	number in s	`60`
`sd`	Self-discharge (per year)	number in %	`1`

Parameter	Field	Takes	Default
`type`	Type	one of the values listed `K` `J` `T` `E` `N` `R` `S` `B`	`K`
`cj`	Cold junction	number in °C	`25`
`t` ⇄	Hot junction	number in °C	`500`
`mv` ⇄	Meter reading (at the cold junction above)	number in mV	`19.6440`

Parameter	Field	Takes	Default
`cfg`	Bridge arrangement	one of the values listed `quarter` Quarter `half` Half `full` Full	`quarter`
`gf`	Gauge factor	number	`2`
`r`	Gauge resistance	number in Ω	`350`
`vex`	Excitation	number in V	`5`
`ym`	Young's modulus (optional)	number in GPa	empty
`e` ⇄	Strain	number in µε	`1000`
`mv` ⇄	Bridge output	number in mV	`2.4975`

Parameter	Field	Takes	Default
`u`	Unit typed in (position in the list of units)	one of the values listed `0` bar `1` psi `2` kPa `3` MPa `4` mbar `5` hPa `6` Pa `7` atm `8` kgf/cm² `9` mmH₂O `10` mH₂O `11` inH₂O `12` mmHg `13` Torr `14` inHg `15` psf	`0`
`v`	Value in that unit	number	`1`
`ref`	The value typed is	one of the values listed `g` Gauge `a` Absolute	`g`
`atm` ⇄	Atmospheric pressure	number in hPa	`1013.25`
`alt` ⇄	Altitude (standard atmosphere)	number in m	`0`

Parameter	Field	Takes	Default
`d`	Outside diameter (male thread)	number	`13.1`
`du`	Diameter unit	one of the values listed `mm` Millimetres `in` Inches	`mm`
`p`	Thread pitch	number	`19`
`pm`	Pitch given as	one of the values listed `tpi` Threads per inch `mm` Pitch in mm	`tpi`

Parameter	Field	Takes	Default
`r0`	Nominal resistance R₀	one of the values listed `100` PT100 `500` PT500 `1000` PT1000 `ni100` Ni100 `ni1000` Ni1000	`100`
`t` ⇄	Temperature	number in °C	`100`
`r` ⇄	Resistance	number in Ω	`138.506`

Parameter	Field	Takes	Default
`r0`	Element	one of the values listed `100` PT100 `1000` PT1000	`100`
`w`	Connection	one of the values listed `2` 2-wire `3` 3-wire `4` 4-wire	`2`
`t`	Process temperature	number in °C	`100`
`bud`	Error budget	number in °C (difference)	`0.5`
`len`	Cable length (one way)	number in m	`10`
`lu`	Length unit	one of the values listed `m` Metres `ft` Feet	`m`
`a`	Conductor size (copper)	one of the values listed `0.5` 0.5 mm² `0.75` 0.75 mm² `1` 1.0 mm² `1.5` 1.5 mm² `2.5` 2.5 mm² `0.205` AWG 24 (0.205 mm²) `0.326` AWG 22 (0.326 mm²) `0.518` AWG 20 (0.518 mm²) `0.823` AWG 18 (0.823 mm²) `1.31` AWG 16 (1.31 mm²)	`0.5`
`mis`	Lead mismatch (3-wire)	number in %	`5`
`tc`	Cable temperature (optional)	number in °C	`20`

Parameter	Field	Takes	Default
`s`	Sensor	one of the values listed `rtd` RTD `tc` Thermocouple	`rtd`
`r0`	Element	one of the values listed `100` PT100 `1000` PT1000	`100`
`rcls`	Tolerance class	one of the values listed `AA` `A` `B` `C`	`A`
`ty`	Type	one of the values listed `K` `J` `T` `E` `N` `R` `S` `B`	`K`
`tcls`	Tolerance class	one of the values listed `1` `2` `3`	`1`
`t`	Process temperature	number in °C	`100`
`w`	Wiring	one of the values listed `2` 2-wire `3` 3-wire `4` 4-wire	`3`
`len`	Cable length (one way)	number in m	`10`
`area`	Conductor size (copper)	one of the values listed `0.5` 0.5 mm² `0.75` 0.75 mm² `1` 1.0 mm² `1.5` 1.5 mm² `2.5` 2.5 mm² `0.205` AWG 24 (0.205 mm²) `0.326` AWG 22 (0.326 mm²) `0.518` AWG 20 (0.518 mm²) `0.823` AWG 18 (0.823 mm²) `1.31` AWG 16 (1.31 mm²)	`0.5`
`mis`	Lead mismatch (3-wire)	number in %	`5`
`tcj`	Terminal temperature (cold junction)	number in °C	`25`
`cjc`	CJC accuracy (instrument datasheet)	number in °C (difference)	`0.5`
`lo`	Range at 4 mA	number in °C	`0`
`hi`	Range at 20 mA	number in °C	`200`
`inp`	Input accuracy (digital)	number in °C (difference)	`0.1`
`out`	Output accuracy	number in % span	`0.03`
`te`	Temperature effect (per 10 K)	number in % span	`0.1`
`dt`	Ambient change	number in °C (difference)	`20`
`oth`	Other errors	number in °C (difference)	`0`
`tgt`	Required accuracy	number in °C (difference)	`1`

Parameter	Field	Takes	Default
`r0`	R₀ (usually R₂₅)	number in Ω	`10000`
`t0`	T₀	number in °C	`25`
`b`	Beta	number in K	`3950`
`t` ⇄	Temperature	number in °C	`50`
`r` ⇄	Resistance	number in Ω	`3588.18`
`t1`	T₁	number in °C	`0`
`r1`	R₁	number in Ω	`33620.6`
`t2`	T₂	number in °C	`25`
`r2`	R₂	number in Ω	`10000`
`t3`	T₃	number in °C	`85`
`r3`	R₃	number in Ω	`1086.67`
`shT` ⇄	Temperature (Steinhart–Hart)	number in °C	`54.803`
`shR` ⇄	Resistance	number in Ω	`3000`

Parameter	Field	Takes	Default
`r0`	R₀	number in Ω	`10000`
`t0`	T₀	number in °C	`25`
`b`	β	number in K	`3950`
`pos`	NTC connected to	one of the values listed `low` Ground `high` Supply	`low`
`vs`	Divider supply	number in V	`3.3`
`rs`	Series resistor	number in Ω	`10000`
`t`	Temperature	number in °C	`25`
`lo`	Range from	number in °C	`0`
`hi`	Range to	number in °C	`100`
`bits`	ADC resolution	number in bit	`12`
`vref`	ADC reference (empty: same as supply)	number in V	empty
`dc`	Dissipation constant (optional)	number in mW/K	empty

Parameter	Field	Takes	Default
`s`	Rated output	number in mV/V	`2`
`v`	Excitation	number in V	`10`
`cap`	Capacity per cell	number in kg	`1000`
`r`	Resistance per cell	number in Ω	`350`
`n`	Number of cells	one of the values listed `1` `2` `3` `4` `6` `8`	`4`
`unit`	Unit	one of the values listed `kg` `t` `lb` `N` `kN`	`kg`
`dead`	Dead load	number in kg	`300`
`live`	Live load	number in kg	`1500`
`e`	Division e (optional)	number in kg	`0.5`

Parameter	Field	Takes	Default
`url`	Upper range limit (URL)	number	`100`
`lo`	Calibrated at 4 mA	number	`0`
`hi`	Calibrated at 20 mA	number	`40`
`unit`	Unit	text	`bar`
`ref`	Reference accuracy	number in % span	`0.075`
`te`	Temperature effect (per 10 K)	number in % URL	`0.1`
`st`	Long-term stability (per year)	number in % URL	`0.1`
`dt`	Ambient shift	number in °C (difference)	`20`
`yr`	Time since calibration	number in years	`1`

Parameter	Field	Takes	Default
`med`	Medium	one of the values listed `water20` Water, 20 °C `water4` Water, 4 °C `water60` Water, 60 °C `custom` Other liquid	`water20`
`rho`	Density	number in kg/m³	`998.21`
`pu`	Pressure unit	one of the values listed `bar` `mbar` `kPa` `psi` `mH₂O` `inH₂O`	`bar`
`lo`	Lowest level	number in m	`0`
`hi`	Highest level	number in m	`5`
`below`	Zero level above transmitter	number in m	`0`
`lu`	Length unit	one of the values listed `m` `cm` `mm` `ft` `in`	`m`
`h`	Current level (optional)	number in m	`3`
`inst`	Transmitter connection	one of the values listed `open` Open tank, or closed with a dry leg `wet` Closed tank, wet reference leg `seal` Two remote seals (capillaries)	`open`
`rhof`	Fill liquid density	number in kg/m³	`998.21`
`d`	Distance between the taps (lower to upper tap)	number in m	`6`

Parameter	Field	Takes	Default
`t`	Air temperature	number in °C	`20`
`rh` ⇄	Relative humidity	number in %	`50`
`td` ⇄	Dew point	number in °C	`9.3`
`p`	Air pressure (sea level 1013.25)	number in hPa	`1013.25`
`pl`	Line pressure (gauge)	number in bar	`7`
`pdp` ⇄	Pressure dew point	number in °C	`3`
`adp` ⇄	Atmospheric dew point	number in °C	`-20.8`

Parameter	Field	Takes	Default
`v`	Flow	number	`10`
`u`	Unit	one of the values listed `m3h` m³/h `lmin` L/min `ls` L/s `lh` L/h `m3s` m³/s `m3d` m³/d `usgpm` US gpm `ukgpm` UK gpm `cfm` ft³/min `cfh` ft³/h `bbld` bbl/d `kgh` kg/h `kgs` kg/s `th` t/h `lbh` lb/h	`m3h`
`rho`	Density (for mass flow)	number in kg/m³	`998.21`
`qmax`	Flow at full scale	number in m³/h	`20`
`dpmax`	Δp at full scale	number in mbar	`250`
`dpu`	Δp unit	one of the values listed `mbar` `kPa` `inH₂O` `mmH₂O` `bar` `psi`	`mbar`
`q` ⇄	Flow	number in m³/h	`10`
`dp` ⇄	Differential pressure	number in mbar	`62.5`

Calculator link format

Rules

Signals and fieldbus

Electronics and current

Temperature

Pressure and force

Level, flow, humidity, vibration

Ratings and specifications

Parameter	Field	Takes	Default
`inp`	Quantity and unit	one of the values listed `a:g` Acceleration, g `a:m/s²` Acceleration, m/s² `v:mm/s` Velocity, mm/s `v:in/s` Velocity, in/s `d:µm` Displacement, µm `d:mil` Displacement, mil	`v:mm/s`
`val`	Amplitude	number in mm/s	`2.8`
`m`	Measure	one of the values listed `pk` Peak `rms` RMS `pp` Peak-to-peak	`rms`
`f`	Frequency	number in Hz	`50`
`sens`	Accelerometer sensitivity (optional)	number in mV/g	`100`
`cls`	Machine (ISO 10816-3)	one of the values listed `(empty)` No evaluation `g1-rigid` Group 1, 300 kW–50 MW, rigid foundation `g1-flex` Group 1, 300 kW–50 MW, flexible foundation `g2-rigid` Group 2, 15–300 kW, rigid foundation `g2-flex` Group 2, 15–300 kW, flexible foundation	`g2-rigid`

Parameter	Field	Takes	Default
`mark`	Ex marking (as on the nameplate or certificate)	text	`II 2G Ex db IIC T4 Gb`
`zone`	Zone	one of the values listed `(empty)` Not specified `0` Zone 0 (gas, continuous) `1` Zone 1 (gas, occasional) `2` Zone 2 (gas, rare) `20` Zone 20 (dust, continuous) `21` Zone 21 (dust, occasional) `22` Zone 22 (dust, rare)	`1`
`grp`	Gas or dust group	one of the values listed `(empty)` Not specified `IIA` IIA (e.g. propane) `IIB` IIB (e.g. ethylene) `IIC` IIC (hydrogen, acetylene) `IIIA` IIIA (combustible flyings) `IIIB` IIIB (non-conductive dust) `IIIC` IIIC (conductive dust)	`IIA`
`ign`	Ignition temperature	number in °C	empty
`layer`	Layer ignition temperature	number in °C	empty

Parameter	Field	Takes	Default
`code`	IP code or NEMA type (e.g. IP66/IP68, IP69K, NEMA 4X)	text	`IP66/IP68`
`need`	Required rating (optional)	text	`IP65`