Trip amplifiers provide voltage free relay contacts that change state when a monitored process signal passes an adjustable set-point.Select from:-
- Single-point Trip Amp
- Loop-powered Trip Amp
- Dual Trip Amp, 2 Set-points
- Indicating Trip Amplifier, 3 Set-points
Typical trip amplifier applications
- - Limit alarm for detection of High and Low alarm conditions
- - With an input from a level sensor, provide tank level control and pump dry-running protection.
- - With an input from a flow sensor and cycling on-off timer, control the position of a penstock or motorised valve to maintain a fixed flow rate.
- - With an input from a temperature or pressure transducer; start a process at one set point, with shut down if the high point is reached.
- - With an input signal from a pH monitor; provide control of a dosing pump.
B12-ST Trip amplifier
A low-cost trip-amp with a single pole change-over relay. The multi-turn set-point control is adjusted, through front panel, by screwdriver. Wall or DIN rail mounting.
B12-ST/k Trip amplifier
As above but the set-point is adjusted by a multi-turn precision dial scaled 0-100%. DIN rail mounting.
COM-2 Trip amplifier
24VDC powered DIN rail mounting trip-amp with a single pole change-over relay. User selectable input ranges.
112-2-1 Trip amplifier
The set-point is adjusted by a multi-turn precision dial scaled 0-100%. Two change-over relay contacts are provided. Wall or DIN rail mounting.
B12-2W Loop-powered trip amplifier
Requires no external supply but derives its power from the 4-20mA input signal. A normally open contact and a normally closed contact are provided. Multi-turn precision dial set-point scaled 0-100%. Wall or DIN rail mounting.
107-2/2W Loop-powered trip amplifier
Function as B12-1 above
B12-DT Dual trip amplifier
A low-cost trip-amp with a single pole change-over relay is provided for each set point. This unit offers interlocked channel operation. The multi-turn set-point control is adjusted, through front panel, by screwdriver. Wall or DIN rail mounting.
B12-DT/k Dual trip amplifier
As above but the set-points are set by multi-turn precision dials scaled 0-100%. Wall or DIN rail mounting.
Set-points are adjusted by multi-turn precision dials scaled 0-100%. Interlock / latched function. Dual input capability. Change-over plus SP relay contacts per channel. Wall or DIN rail mounting.
D16-T Universal input dual trip amplifier
Accepts Thermocouple, RTD, mA and mV inputs. Set-points are adjusted by PC software via USB link. DIN rail mounting.
B12-TT Indicating trip amplifier (3-point programmable)
Four digit display of monitored variable. Programmable, trip points, input source and scale, delay, hysteresis, relay action, alarm type Monitored channel status indication Scaling 0-100%, voltage, mA or custom engineering units. Wall or DIN rail mounting.
Other instruments with trip / alarm functions
in our range include:-
Universal input data aquisition modules
See Tracker 331 / 332...
Signal source for on-site testing and re-calibration
See the Current loop and voltage calibrator…