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| 2-WIRE ISOLATED TEMPERATURE TRANSMITTER ------------------------------------------------------------------------------TRX20 |
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| INPUT : Pt100, Mounting : DIN Rail |
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- Solder jumpers for
- Span
- Zero
- Upscale / Downscale
- Multirange : 8 SPAN ranges, 25 to 600 C°/ 45 to 1080 F°
4 Zero ranges, -100 to+ 70°C/-148 to +158 °F
- 0.1% temperature linear 4~20 mA output
- Upscale / downscale selectable sensor break detection
- ON LED shows state
- Pt50, Pt200, Pt500, Pt1000 also available
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GENERAL
TRX20 is a DIN rail mounted high performance, 2-wire isolated temperature transmitter. It provides isolation between the input and the 4~20 mA output current.
TRX20 with Pt100 input is adjustable for 8 overlapping ranges in °C or °F and gives a temperature linear output. All selections are made by solder jumpers. 'Fine' ZERO / SPAN potentiometers are provided for calibration.
The product design gives easy access to terminals & adjustments. |
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| SPECIFICATION All specifications at ambient of 25° C, unless specified otherwise |
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| INPUT |
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| Input type |
Pt100 (α = 0.00385),
3-wire connection |
| Sensor current |
0.3 mA |
| Other input types |
Pt50, Pt200, Pt500, Pt1000 |
| MONITORING |
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| Sensoe break detection, |
Upscale ~ 25 mA |
| selectable |
Downscale ~ 3.5 mA |
| ON LED |
Provided |
| ADJUSTMENTS |
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| Zero selection |
-100 to +70 °C(-148 to +
158 °F) in 4 overlapping
ranges (see Table 1) |
| Span selection |
25 to 600C° (45 to 1080 F°),
8 overlapping ranges (See
Table 2) |
| OUTPUTS |
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| Current output |
4~20 mA |
| Linearity |
Temperature linear |
| Current limit |
~25 mA |
| Permissible load |
600 Ω@ 24 VDC, 22 mA (see
Fig 2) |
| ISOLATION |
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| Mutual isolation |
a) 1500 V AC RMS, 50 hz/1
minute |
| between input & output |
b) 250 V AC RMS, 50 hz,
continuous |
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| ACCURACY |
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| Linearity & calibration |
± 0.1% of span |
| Temperature effect on |
± 0.02% of span / °C |
| accuracy |
or 0.05 °C/°C whichever is greater |
| Supply voltage / load effect |
± 0.002% of span / V |
| POWER SUPPLY |
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| Supply voltage |
10 to 30 V DC |
| ENCLOSURE |
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| Din rail mount |
See Fig 3 |
| Material |
ABS plastic |
| Dimensions (in mm) |
80(H) x 25(W) x 85(D) |
| Mounting |
Snap on for 35 mm DIN rail to DIN 46277 |
| Connection, single / |
≤ 2.5mm2 , AWG 14 |
| stranded wires |
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| Weight |
<200 grams |
| Protection |
IP20 |
| TEMPERATURE, HUMIDITY |
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| Ambient, storage |
-20 to +85 °C(-5 to + 185 °F) |
| Ambient, Operation |
-20 to +55 °C(-5 to + 160 °F) |
| Relative humidity |
0 ~95% |
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| Table 1 |
| Zero selection |
| °C |
°F |
| -102 to -65 |
-150 to -85 |
| -68 to -21 |
-90 to -5 |
| -28 to + 29 |
-18 to + 84 |
| -6 to + 73 |
+21 to + 163 |
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| Table 2 |
| Span selection |
| °C |
°F |
| 25 |
45 |
| 50 |
90 |
| 100 |
180 |
| 200 |
360 |
| 300 |
540 |
| 400 |
720 |
| 500 |
900 |
| 600 |
1080 |
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| The above zero & span selections are done using solder jumpers. The calibration for a given range is then done using the 'ZERO' & 'SPAN' mA potentiometers on the instrument front. |
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