STM Intelligent speed/frequency meterDetailed product description：

I. Overview

STM intelligent speed/frequency meter, with 5-digit 0.8-inch digital display, one current output, three relay alarm outputs and alarm indicator lights, and RS232/485 communication; It can be matched with NPN-OC output switch type speed sensors and magneto electric speed sensors. In addition to detecting general speed, linear velocity, and flow rate, it can also measure ultra-low and ultra-high speeds. It is an intelligent speed display control instrument.
STM intelligent speedometer has 10 sets of user parameters, which can be queried/modified by the operation keys on the panel or computer. The confirmed parameters can be saved for a long time. Satisfying various engineering needs, it has become a truly intelligent instrument.

1、 Main technical characteristics
1. Power supply: 85V~250V, AC, 50Hz/60Hz or 18V~32V, DC
2. Power consumption: not exceeding 5W
3. Input signal: 0-10kHz
4. Display range: 0.1 to 99999 (decimal point can be kept to any digit)
5. Basic error: 0.1% (digital, sampling time 100ms~200ms)
0.05% (digital, sampling time 200ms~400ms)
0.03% (digital, sampling time above 400ms)
0.3% (analog output)
6. Operating environment: Temperature -20~65 ℃
Relative humidity ≤ 85%
7. Hole size: 152 × 76
8. Dimensions: 160 × 80 × 130
9. Weight: less than 800g

Ordering precautions:

The specification diagram of STM intelligent speed/frequency meter is as follows



Ordering instructions:
The basic functions of STM intelligent speed/frequency meter include 5-digit 0.8-inch digital display, one current output, three relay outputs, and alarm indicator lights. The communication and power supply are determined by the specifications. If there is no specification number when ordering, the corresponding commonly used specification STM-4AC is used. In addition to the basic functions, the power supply is 85-250V, AC, and RS485 communication is used;

Example of ordering specifications: STM-2DC specification. In addition to basic functions, the power supply is 18-32V, DC, and RS232 communication is used;

Special ordering specifications include:
LX: Display the rotational speed of the centrifugal switch action; ZD: Display maximum speed; SX: Display speed direction.