JUMO dTRON 308 (type 703043) is a compact panel-mounted PID temperature and process controller with 96×48 mm front size. It measures thermocouple, Pt100 and standard current/voltage signals and provides two-state, three-state, modulating (motorised valve) and continuous control. Its 8-segment setpoint program handles heating ramps, soaking and cooling steps of heat-treatment furnaces in a single unit, and the self-optimisation function calculates the PID parameters during commissioning.
Technical data
| Type | 703043 – JUMO dTRON 308 |
|---|---|
| Front size / mounting | 96×48 mm, panel mounting (DIN 43700), mounting depth 90 mm |
| Weight | Approx. 380 g (fully equipped) |
| Analog inputs | 1 standard + 1 optional |
| Sensor / signal types | Thermocouples L, J, U, T, K, E, N, S, R, B, C, D (DIN EN 60584); Pt100, Pt500, Pt1000 (DIN EN 60751), KTY11-6; 0(4)…20 mA; 0(2)…10 V and 0…1 V; resistance transmitter 100 Ω…4 kΩ; heating current 0…50 mA AC |
| Measuring accuracy | Thermocouple ≤ 0.25 %; Pt100 (3/4-wire) ≤ 0.05 %; current and voltage inputs ≤ 0.05 % |
| Sampling time | 250 ms (50, 90 or 150 ms selectable) |
| Binary inputs | 2 (depending on order code) |
| Relay output | Changeover relay, 3 A / 230 V AC (resistive load); optional 8 A relay |
| Other outputs | Logic 0/12 V or 0/18 V; optional SSR 1 A / 230 V; optional analog 0/2…10 V or 0/4…20 mA; 2-wire transmitter supply |
| Controller types | Two-state, three-state, modulating (motorised valve) and continuous; P, PD, PI, PID structures |
| Self-optimisation | Two methods (oscillation and step response); calculates proportional band, reset/derivative times, switching period and filter time constant |
| Program and functions | 8-segment setpoint program, ramp function, 4 setpoints, 2 parameter sets, 2 timers, 4 limit comparators |
| Communication (optional) | RS422/RS485 Modbus (9600 / 19200 / 38400 baud) or PROFIBUS-DP |
| Display | 4-digit red process value and 4-digit green setpoint display, 6 status LEDs |
| Supply | 110…240 V AC (−15/+10 %), 48…63 Hz or 20…30 V AC/DC; max. 13 VA |
| Protection | Front IP 65, rear IP 20 |
| Ambient temperature | Operation 0…55 °C, storage −40…+70 °C |
| Configuration | From the front panel or with the optional JUMO setup program |
We can supply and commission the controller together with thermocouples, SSR/thyristor units and the furnace control panel. Contact us also for replacing old controllers in existing furnaces with a JUMO model fitting the same panel cut-out.
Technical data is based on the manufacturer data sheet (JUMO dTRON 316/308/304, types 703041…703044) and is for information only. Input/output hardware, supply voltage and interface are defined by the order code; we define the right code for your application at quotation stage. Image is representative.
For price, stock and lead time, use the Request a Quote button or call +90 533 945 27 94.
Tags: JUMO dTRON 308, JUMO 703043, dTRON 300, PID controller, temperature controller, furnace controller, program controller, 96×48 controller