TEMPERATURE CONTROLLER PT-421

PT-421 is a device used for air or water temperature continuous measurements. Enables the temperature regulation with use of relays (maximum and minimum).

The controller is available in three versions:

equipped with two relays;
equipped with 0 ÷ 20 mA or 4 ÷ 20 mA current loop;
equipped with RS-232 output – current results may be stored in PC memory with use of delivered software

The controller cooperates with a PT-1000s platinum temperature probe of higher accuracy, build in a steel pipe of 3 mm diameter.
It is possible to calibrate the meter by entering the probe's data.
Cable and probe length may be determined by the customer (standard: 5 m).
The meter is equipped with a large, easy-to-read backlit LCD display.
Recomended types of cables: silicone, resistant to temperature up to 250°C, with additional protection (steel braid) 250 °C.
PT-421 is equipped with a hanger for mounting on a wall.
24 months of warranty.

On special order available meter which may collect up to 8000 data sets with chosen time interval. The available values of the interval are 1, 2, 5, 10, 15, 30 and 60 minutes.
If the memory capacity is used up the oldest result is deleted and replaced with a new one. The collected or actual results may be transferred to a PC with use of the USB connector. Delivered in the set software enables the transmission of data including measured result, measured temperature, time and date. Stored results can’t be viewed on the meter’s display, except the minimal and maximal values in given time.

TECHNICAL DATA

Range	-70 ÷ 400 °C
Resolution	In range -70.0 ÷ 199.9 °C: 0.1 °C, above 199.9 °C: 1 °C
Acuracy*	Range	Sensor Pt-1000S
	-70 ÷ 0.0 °C 0.0 ÷ 99.9 °C 100 ÷ 199.9 °C 200 ÷ 400 °C	±0.9 °C ±0.3 °C ±1.5 °C ±3.0 °C
Weight / Dimension	180 g / L = 149mm; W = 82 mm; H = 22
Memory**	8000 data sets collected with chosen time interval
Power	12 V / 100 mA power adapter
Relay's parameters	2A/250VAC/30VDC
Isolation class	according to PN-83/T-06500
Radio electric interference	N level

*	Acuracy of the meter with the probe.
**	Model with memory available on special order.