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Temperature
Panel Meter
4 Alarm Outputs Standard, RS-485 Serial Communications Input/Output
Standard, Analogue Output Option
 General
Introduction
A competitively priced, fully programmable Temperature panel
meter suitable for Thermocouple and PT100 (RTD) inputs. It
features a fully scaleable 4 digit bi-colour LED display across
the range -999 to + 9999. 4 alarm output options are fitted
as standard where the display changes colour in the alarm
condition if programmed to do so. Analogue output via an external
isolator is an option (consult sales office) and serial communications
RS-485 input and output is fitted as standard.
Temperature Inputs & Ranges
The display may be scaled to the following ranges within the
input selected
Thermocouple
- J 0-750C / 32-1382F
- K 0-1200C / 32-2192F
- S 0-1750C / 32-3182F
- T -200-400C / -328-752F
2/3 wire PT100 (RTD)
-200+300c/-328+572F
Display Colour selection
The display may be programmed to be
- RED ONLY
- GREEN ONLY
- RED (normal) to GREEN (in alarm)
- GREEN (normal) to RED (in alarm)
Standard features
- Display range -999 to + 9999
scaleable
- Display colour change in Alarm
condition
- Inputs Thermocouple or 2/3
wire PT 100 (RTD) programmable
- Serial Communications programmable
RS485 send, broadcast, receive
- 4 programmable alarm outputs
- Programmable decimal point
position when resistance input selected
- Programmable display blanking
- Programmable last digit filter
1, 5, 10, 25, 50
- Programmable unit of measurement
degrees C or F
- Excitation for field transmitters
15 V @ 45mA
- NEMA 4 / IP65 front panel protection
- CE approved, UL pending
4 Alarm Outputs
4 alarm outputs are available via N/O 3A relays. The alarms
are fully scaleable and independent of one another and may
be set for HI or LO trip. The alarms can be programmed to
energise or de-energise in the alarm state, open / close or
latch, and have independent variable hysteresis, time delay
trip response adjustable 0-250 seconds. In the alarm state
the display will change colour if programmed to do so.
Serial Input / Output
(fitted as standard)
Up to 31 units may be multi-dropped. The displayed value can
be uploaded or downloaded from a PC via an RS-485 port. One
unit can also be programmed as a 'master' with the remaining
multi-dropped units acting as OEslavesą.
Analogue Output
Option
Isolated 4-20mA or 0-10V, assigned to a display range via
external isolator (consult sales office)
Technical Specification
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Display
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4 digit seven segment LED 14.2mm high Display changes colour in alarm state
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A to D Converter
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Accuracy +/- 0.02% of range
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Communications
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RS-485
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Alarm output
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4 N/0 3A relay @ 250Vac
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Analogue output
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External Isolator 4-20mA, 0-10V
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Scaling/Calibration
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decimal point in resistance mode
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Accuracy
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< +/- 0.005% (+/- 1 digit)
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Input bias current
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< 0, 1 micro amps
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Zero drift (0-50C)
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+/- 0.0025% / C of range +/- 1 digit
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Span drift (0-50C)
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+/- 0. 0 1 % / C of reading +/- 1 digit
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Ripple rejection
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< 2 digits with 1/4 mV PK to PK ripple @ 50/60 hz
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Step Response
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2 secs to 95% of final value
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Power Supply
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85-265Vac or 18-30Vac/dc < 5VA consumption
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Environmental
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Operating temperature 0-50 C Storage -40 to 85 C
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Case size
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H x 48, W x 96 x D132mm including connectors
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Panel cutout
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91 x 44.5 mm
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