This electronic on-off controller can be applied for limitation purposes (guard function) or for the control of heating or cooling systems.
Made in Germany. brand ALRE, model ITR
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The ITR 79.4xx type series has been especially designed for application with heating systems, whereas the ITR 79.8xx type series has been provided for use with floor heating systems. The control devices of these series activate the addressed relays if the temperature falls below the related set temperature value. The related turn on state is signalled by a red LED. The ITR 79.5xx type series, by contrast, has been specifically designed for application with cooling devices and activates the corresponding relays if the temperature passes over the related set temperature value. The turn-on state is signalled by a green LED. The relays are deactivated if a power failure, a sensor breakdown or a sensor short circuit occurs.
| Nominal voltage: | 230 V, 50/60 Hz, as for other values, see imprint on the device |
| Power input: | approx. 2,8 VA |
| Sensor: | external NTC sensor |
| Sensor tolerance: | ±1K |
| Switching difference: | 0.5 … 5 K, adjustable |
| Contacts: | change-over switch, potential-free |
| Make contact: | max.10(3)A 250 V |
| Break contact: | max.5(1.5)A 250 V |
| Visual indications: | LED for indication of switching state
“relay on” |
| Electrical connection: | screw terminals as per clamping point:
0,25 mm2… 2.5 mm2 |
| Type of installation: | inside switch cabinet, 35 mm supporting rail |
| Protection class: | II after corresponding installation |
| System of protection: | IP 20 |
| Ambient temperature: | –10 … +50ºC |
| Storage temperature: | –20 … +60ºC |
Range of types
| Type | Range of control | Equipment | Sensor |
| ITR 79.402 | –30 … + 10°C | heating, red LED | 1 (21) |
| ITR 79.408 | –10 … + 40°C | heating, red LED | 3 (23) |
| ITR 79.404 | 0 … + 60°C | heating, red LED | 4 (24) |
| ITR 79.405 | +40 … + 90°C | heating, red LED | 5 (25) |
| ITR 79.406 | +70 … +135°C | heating, red LED | 6 |
| ITR 79.502 | –30 … + 10°C | cooling, green LED | 1 (21) |
| ITR 79.508 | 0 … + 60°C | cooling, green LED | 3 (23) |
| ITR 79.504 | –10 … + 40°C | cooling, green LED | 4 (24) |
| ITR 79.804 | 0 … + 60 (Scale 0-6) | heating, red LED | 8 HF-8/4-K |
You can request the necessary certificates, documentation, instructions and user manuals for ALRE ITR using the special form.
You can buy ALRE ITR in UK or Europe at a favourable price in «DOLCHETRADE» by leaving a request on the website, by phone +441225535040 or by email dolce@dolcetrade.com. ALRE ITR price are subject to change depending on exchange rates. We deliver instruments by transport companies in the United Kingdom and Europe.
See also: Digital temperature controllers
