Minh Quan Technology Joint Stock Company
Hotline: 01692 114 683
Mr Que: 0973 852 363
Ms Ha: 0165 2197 433
Email: mqtekvietnam@gmail.com
Call usProduct information
- 2 alarm contacts
- Input: voltage & current or temperature, special conversions
- 4 digit LCD display, 15mm, color adjustable, optional: 5 digit
- programmable by computer or laptop with programming unit
- buttons to change the alarm contacts
- universal supply 20…253VAC or DC, galvanic isolated
- optional signal output (current or voltage), galvanic isolated
- modbus (optional)
- USB – logger (optional)
- optical alarm contact
- rail mounting 35mm
Product Details
The alarm unit M3118 is used to check or control any type of signal current or voltage. It converts the input signal to an internal standard signal of for example 0 to 100.0%. In this range two alarm contacts can be set independently.
The 4-digit measuring value, as well as the status of the alarm contacts, is shown on an easy to read LCD-Display.
All settings as alarm values, hysteresis, range and operating mode of the floating contacts can be set with a link cable, connected to a personal computer or a laptop. Both limit values can also be changed directly on the device using push buttons.
A typical application would be to measure and monitor pressure in a process vessel. The pressure transmitter converts the pressure of 1 to 10 bar to a current signal of 4 to 20mA. The M3118 monitors under and overpressure in the vessel. It converts the 4… 20mA signal current to 1.00bar…10.00bar. The alarm contacts can be set between 1bar and 10bar. With these floating alarm contacts, overpressure valves, compressors, etc. are driven directly.
Optionally, a galvanic isolated output signal of 0…20mA or 4…20mA is available.
The alarm unit M3118 uses a universal supply from 20 to 253VAC/DC.
Specifications
| Input signal: | M3118-AR: 0/4…20mA; 0…1/10V, other values in these ranges are free programmable M3118-TR: Platinum-/Nickelsensors, 2- or 3-wire connection 100Ω, 200 Ω, 500Ω or 1000Ω at 0°C (DIN 43 760) Other input signals on request |
| Input load / impedance: | Current signal = 51Ω ; voltage signal = 1MΩ |
| 2-Wire transmitter supply: | 24VDC, max. 25mA |
| Display: | LCD-Display, 4-digit, 15mm height, color adjustable |
| Display range: | -9999…9999, optional -99999…99999 |
| Accuracy: | ±0.1% at 23°C ambient temperature |
| Reproducibility: | ±0.1% |
| Temperature coefficient: | Zero drift: 30ppM/°C typical
Gain drift: 25ppM/°C typical |
| Long-term stability: | ±0.1% |
| Working temperature range: | -5°C to +45°C |
| Maximum humidity: | 95%, non-condensing |
| Range adjustment: | Programmable by PC / laptop with programming unit |
| Zero-/Gain adjustment: | Programmable by PC / laptop or directly on the device with small keys |
| Limit contacts:
Status: Hysteresis: Contacts rating: Max. contact load: Max. contact lifecycle: |
Two floating change-over contacts may be adjusted over the full range. Each can be defined as normally open or normally closed contact in the menu via the keys. on easy to read LCD-Display Adjustable, factory settings is ±5 digit 1A with resistiv load / 230VAC 100’000 operations at max. load 10’000’000 operations mechanically, without load |
| Display unit: | on easy to read LCD-Display, 8 units programmable |
| Option signal output:
Max. load: Output impedance: |
0/4…20mA, galvanically isolated 500Ω >1MΩ typical Power supply: 20 to 253VAC or |
| Power supply: | 20 to 253VAC or DC |
| Power supply load: | 4.5W to 7.0W at 230VAC |
| CE-conformity: | Fulfilled |
| Terminals: | Plug-in screw terminals |
| Mounting: | 35mm mounting rail, EN50022-35 |
| Weight: | 200g |
| Warranty: | 2 years |
| Options: | – USB programming unit, with cable and software
– Other, user-specific in- and output signals – USB–logger (without I-Output) – Modbus (without I-Output) – 5-digit LCD-display |
