TEKMAR 444 - Control Description The Mixing Expansion Module 444 provides six options for operating a variable speed injection pump, a floating action actuator, or an analog 0-10 V (dc), 2-10 V (dc), 0-20 mA, or 4-20 mA signal. The 444 also provides an output for a system pump. The 444 cannot operate alone and requires the use of a tN4 System Control that is capable of operating a Mixing Expansion Module.
Literature — D444, J444, W444,
Control — Microprocessor PID control; This is not a safety (limit) control
Packaged Weight — 1.14 lbs. (520 g)
Enclosure — D enclosure, white PVC plastic
Dimensions — 4-3/4” H x 2-7/8” W x 1-7/8” D (120 x 74 x 48 mm)
Approvals — CSA C US, CSA/UL 61010-1, meets Class B: ICES and FCC Part 15
Ambient Conditions — Indoor use only, 36 to 104°F (2 to 40°C)
— RH < 92% to 104°F (40°C)
— <3000 m, Installation Category II, Pollution Category 2
Power Supply — 24 V (ac) +/- 10% 50/60 Hz, 4 VA standby, 56 VA fully loaded
System Pump Relay (front) — 24 V (ac) 2A
System Pump Relay (back) — 120 V (ac) 5A 1/3 hp
Variable Speed Output — 120 V (ac) 2.4 A, 1/6 hp, internal overload circuit T2.5 A 250 V
Floating Output — 24 V (ac) 8 VA maximum, triac output, minimum 0.6 VA
Modulating Output (voltage) — 0 or 2-10 V (dc), minimum 10kΩ
Modulating Output (current) — 0 or 4-20 mA, maximum 1kΩ
Sensors — NTC thermistor, 10 kΩ @ 77°F (25°C +/- 0.2°C) ß=3892
Included — 1 Universal Sensor 082
