RET-37-E-220 ▪︎ Horizontal Type Digital Temperature Controller

NOTICE: This product is an old version offered only for spare/replacement use. For new projects, please check our “similar products”.

RET-37 Series is a digital temperature control device featuring a PID control algorithm. It supports FeConst (type J) and NiCrNi (type K) thermocouple inputs. Models with Pt100 input are also available. Power supply options include 220V, 12V, and 24V AC/DC.

Available Models:
RET-37E → Basic model, suitable for ON/OFF control.
RET-37S → PID controlled model for standard applications.
RET-37P → Advanced model with enhanced PID and Pt100 input support.

[SET] Setting the Target Temperature:

Press the SET button briefly. The current set value will appear on the screen, and a dot at the top left will start blinking. Use ↑ or ↓ to adjust the value.

[PRL] Accessing Parameters:

Press and hold the SET button for 4 seconds. "PRL" will appear. Set this value to 49 to access all parameters. Use ↑ or ↓ to navigate, and press P to view/change values.

To exit the menu, hold the P button for 4 seconds or remain idle for 50 seconds.

Note: After changing any parameter, please power off and on the device to apply the changes.

[PARAMETER TABLE]

SEt → Target temperature
Pb → Proportional Band
It → Integral Time
dt → Derivative Time
evet → Cycle Time (1–200 sec)
PoFS → Proportional Offset
SStr → Soft Start Duration
HYS → Hysteresis
Eout → Output on Error
Act → Control Direction (HEAt / cooL)
InP → Input Type (FEco = type J / niCn = type K)
uPL / LoL → Upper / Lower Temp Limits
Soff → Probe Calibration
unıt → Temperature Unit (cELc / FAh)
Fılt → Filter Constant
Stu → Auto PID Setting (on / oFF)
rFAc → Factory Reset (1 = Yes)

[AUTO-PID] Auto PID Setup:

While on main screen, press and hold the P button for 10 seconds to initiate Auto PID tuning.

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