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Trip amplifiers

Trip amplifiers provide voltage free relay contacts that change state when a monitored process signal passes an adjustable set-point.

Select from:-

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.

Single channel trip amplifiers (one set-point)

See trip amplifier selection guide...

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.

Set-up on-site with the CAL-2 current-loop and voltage calibrator

Trip amplifer type b12-st

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.

Check set-points with the CAL-2 current-loop and voltage calibrator

 

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.

Trip amplifier tyoe 112-2-1

Loop powered trip amplifiers (one set point)

See trip amplifier selection guide...

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.

loop-powered trip amplifier type B12-2W

107-2/2W Loop-powered trip amplifier

Function as B12-1 above

loop-powered trip amplifier type 107-2/2w

Dual channel trip amplifiers (two set-points)

See trip amplifier selection guide...

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.

Set-up on-site with the CAL-2 current-loop and voltage calibrator

Trip amplifier type B12-DT

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.

Dual trip amplifier type B120DT/k

112-2-2 Dual trip amplifier

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.

Trip amplifier type 112-2A-2

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.

Trip amplifier type D16-T

Triple channel trip amplifiers (three set-points)

See trip amplifier selection guide...

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.

Trip amplifier type b12-tt

Other instruments with trip / alarm functions
in our range include:-

Digital panel meters
See Process display (programmable with alarms)...
See Universal input panel meters...

Universal input data aquisition modules
See Tracker 331 / 332...

Accessories...

Signal source for on-site testing and re-calibration
See the Current loop and voltage calibrator