Temperature Chart Recorder Technical Specifications
| Casing | Shock resistant plastic |
|---|---|
TT202 & TT210: Transparent lid in polycarbonate
| |
| TT260: Seal around door. Either panel or wall mount. | |
| Size | TT202 & TT210: 154 × 86 × 215 mm (6 × 3.4 × 8.5") |
| TT260 Panel Mount: 144 × 144. Cut out panel 138 × 138 mm. Depth behind panel: 90mm | |
| TT260 Wall mount: 184 × 144 mm, depth 110 mm | |
| Ambient | Operation and storage -30 + 60°C 5-95% Relative Humidity |
| Battery | TT202: 1.5 Volt AA alkaline |
| TT210: 1.5 Volt AA alkaline & 9V PP3 | |
| TT260: Battery Back-up only: 9V PP3 rechargeable | |
| Measuring Elements/Inputs | TT202: Spiral wound precision bi-metal element |
| TT210: Potentiometric measuring system with full servo-system. Input from Pt100 sensor | |
| TT260: Potentiometric measuring system with full servo-system. Inputs: Pt100 sensor for temperature, 4-20 milli Amperes, 0-1 Volt from transmitters/transducers | |
| Charts | 100 mm diameter (4") |
| Rotation | 24 hours or 7 days |
| Guarantee | TT202, 210 and 260 models guaranteed for one year (parts and labour) |
| Electronics | TT210 & TT260: Thick film hybrids encorporating bipolar and locmos devices. |
| Power Supply | TT202: No extra power supply necessary |
| TT210: >For the measuring and recording system: 1 battery type PP3 9V, for chart motor 1.5V. Expected lifetime of batteries depends much on the specific situation the recorders are used in: The 9 V battery will normally last in excess of 3 weeks continuous use and the 1.5V battery for the chart motor from 12 - 18 months. | |
| TT260: -200/250C AC, 50/60 Hz optional 12V DC etc. |
Accuracy
TT202: Portable Bimetal Temperature Circular Chart Recorder
The accuracy of a TT202 recorder is better than 2% of scale (range).
For example, a recorder with a range of 0 to 25 °C the accuracy is therefore better than ± 0.5 °C. For a recorder with a wider range, eg. 0 + 45 °C, the accuracy is ± 0.9 °C. To get the best accuracy, a recorder with a suitable narrow range should be chosen.
TT210: Portable Temperature Recorder and TT260: Fixed Electronic Temperature Recorder
The accuracy of both TT210 and TT260 temperature recorder models is 1% of the of the scale.
Battery backup
TT260: mains, fixed mounting, temperature recorder
Automatic charging circuit for NiCad battery will secure correct operation of both chart drive and recording for 2-4 weeks after mains failure, depending on actual circumstances.
Optional alarm contacts will also function, but may reduce the working time to 1-3 weeks after mains failure (Fully recharged battery).
Alarm Contacts
TT260: mains, fixed mounting, temperature recorder
Adjustable from the front over the whole range. Hysteresis for alarms: Standard 0.5% of range. Output from alarm(s): Change-over relay(s):
- Maximum switching voltage: 125V AC, 250 V DC.
- Maximum continuous current: 2A.
- Maximum switching power 60W (DC), 125 VA (AC) with DC voltage: 50-150 Watt, depending on voltage.
- Maximum power rating with AC voltage: 250 VA.