The panel mounted Digital Temperature Scaneers (TempScan 15101) are designed to monitor temperature of RTD or T/C sensors with 2 alarms. The instruments are designed with CMOS ICs and incorporate a relay based multiplexer to select a sensor. A signal-conditioner with open-sensor detection and necessary linearisation processes the output of the scanned sensor. These scanners can operate in Auto and Manual modes.
|
| Sensor Option | RTDs & T/Cs as per the Sensor Table given below |
| RTD | ||
| Opt. | Sensor | Range |
|---|---|---|
| Code | Type | Limits °C |
| P | Pt 100 | -200 to 800 |
| (Min Span for RTD > 100) | ||
| (Max Span for RTD as above) | ||
| T/C | ||||
| Opt. | Sensor | Range | Min | Max |
|---|---|---|---|---|
| Code | Type | Limits °C | Span | Span |
| J | Fe/Const | -50 to 700 | 200 | 500 |
| K | Cr/Al | -50 to 1200 | 200 | 800 |
| T | Cu/Const | -100 to 400 | 200 | 300 |
| E | Cr/Const | -100 to 800 | 200 | 400 |
Note :Spans other than above are available with reduced accuracy
| Sensor Std |
Calibratable in any Standard. Unless specified, instruments will be factory |
| calibrated as per DIN 43760 for RTDs and as per ISA/ANSI MC 96.1for T/Cs |
| Signal Conditioning Specs |
RTDs | Bridge Current 0.5 to 1.5 mA |
| T/Cs | Input Imp of > 1 Mohm. Auto CJ Compensation of ±1° C accuracy |
| Effect of Leadwire |
RTDs | 1°C for 10% of nominal resistance per lead for 3-wire RTDs |
| T/Cs | 1°C for T/C lead-wire resistance of 100 ohms |
| No of Channels |
Option Codes | A | B |
C | D | E | F |
| No of Channels | 6 | 8 |
10 | 12 | 16 | 20 |
The front panel incorporates Switches and LED indicators for monitoring individual channels.
| No of Displays | One | |
| Channel No | One/Two digit 12mm LED display | |
| Sensor Temp | 3 ½ digit 12 mm LED display with a resolution of 1°C | |
| Display Type | 7 Segment 3½ dgt 12mm or 4½ dgt 8mm RED/ORANGE LEDs. 20/25mm, | |
| 50mm LEDs and Bargraph available in Model 23104 in specific sizes. | ||
| Over Range/ | Indicated by flashing Decimal Points of the Indicator | |
| Open Sensor | ||
| Push Buttons | A/M | When pressed, the scanner is in Manual mode |
| Advance | A push increments channel number in Manual mode | |
| Relay Status | Two LED indicators for displaying Relay Status |
|
| Options |
I | Indicator only. No Alarms |
| A | Two Alarms common to all Channels and setpoints common to all Channels | |
| B | One Alarms Each assigned to 2 I/P Groups with setpoint common to a Group | |
| The Input Groups are to be specified along with the order. | ||
| Alarm Type | User selectable to High or Low |
|
| Alarm Settings | Settable throughout the Input Range for each alarm |
|
| Acc of Setting | ±0.5% of f.s. with a hysteresis of 0.5% of f.s. |
|
| Relay Operation | User selectable fail-safe or nonfail-safe |
|
| Contact Output | One change-over contact of 230V AC/DC, 3A, 100VA per alarm |
|
Accuracy @ operating temperature between 22-32 °C and valid for one year Calibration Cycle:
| Accuracy | |
|---|---|
| RTD | ±0.5% of rdg ± 1 dgt |
| T/C | ±0.5% of rdg ± 1 dgt ± CJ Error (1°C) |
Power Supply options are as follows:
| Option | Power Supply |
|---|---|
| A | 230V AC, 50Hz ± 15% |
| B | 110V AC, 50Hz ± 15%. |
| Rated Temp | 5 to 55 °C |
| Humidity | < 90% RH (Non-Condensing) |
| Zero Drift | < 1dgt for every 10°C beyond the specified ambient of 22 - 32 °C |
| Span Drift | < 0.0005% of rdg / °C |
| Storage Temp | 0 to 70 °C |
| Enclosure Type | Welded construction with pullout chassis |
| Enclosure Finish | Powder Coated |
| Enclosure Size | As shown below: |
| Option | Enclosure Type | Bezel Size | Cutout Size |
|---|---|---|---|
| H | Vertical | 96(W) x 192(H) | 92(W) x 186(H) |
| L | Horizontal | 192(W) x 96(H) | 186(W) x 92(H) |
| I/O Terminals | Suitable for 1.5 Sq mm wires MKDS 3 of Phoenix OR Equivalent |
