Product
Threshold converter type M2218
Minh Quan Technology Joint Stock Company
Hotline: 01692 114 683
Mr Que: 0973 852 363
Ms Ha: 0165 2197 433
Email: mqtekvietnam@gmail.com
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The threshold converter M2218 is used to check or control either a signal current or a temperature. A Pt-100 platinum sensor in 3-wire mode can be connected to the unit. It converts the input signal to an internal standard signal of 0 to 100.0%. Two independent limit contacts can be set within this range.
- Input M2218-A: 4…20mA
- Input M2218-T: Pt-100 0…160ºC
- 2 alarm contacts
- programmable
Product Details
The threshold converter M2218 is used to check or control either a signal current or a temperature. A Pt-100 platinum sensor in 3-wire mode can be connected to the unit. It converts the input signal to an internal standard signal of 0 to 100.0%. Two independent limit contacts can be set within this range.
All settings as limit values, hysteresis, range and operating mode of the contacts can be set with a PC-program.
The unit may be programmed to customers values or ranges by the factory.
A typical application would be to measure and monitor pressure in a process vessel:
A pressure transmitter converts the pressure of 1 to 10 bar to a current signal of 4 to 20mA. The M2218 monitors under- and overpressure in the vessel. It converts the 4…20mA signal current to 0…100.0%. The alarm is set between 0% (=1 bar) and 100.0% (=10 bar). With these floating alarm contacts, overpressure valves, compressor relays, etc. are driven directly.If a Pt-100 sensor is connected to the input, the unit works as a temperature monitor or as a simple temperature controller.
Optionally a galvanically isolated output signal of 4…20mA is available.
The 24VDC power supply is galvanically isolated from the input circuit and the output current source.
Specifications
| Input signal: | M2218-A: 4…20mA M2218-T: Pt-100 platinum sensor with 3-wire connection, temperature range: 0…160°C |
| Input load: | M2218-A: 51Ω |
| Accuracy : | ±0.2% at 23°C ambient temperature |
| Reproducibility | ±0.1% |
| Temperature coefficient | Zero drift: 50ppM/°C typical
Gain drift: 50ppM/°C typical |
| Long-term stability | ±0.2% |
| Working temperature range: | -5 to +45°C |
| Maximum humidity: | 95%, non-condensing |
| Programming: | with a programming cable to a front panel miniature plug |
| Limit contacts:
Hysteresis: Contacts: Max. contact load Change limit contacts: Display limit contacts: |
Two, adjustable between 0.0 and 100.0%
computer programmable, see manual floating normally open contacts 1A/48V resistive computer programmable, see manual computer programmable, see manual |
| Current output:
Max. load: Output impedance: |
4…20mA, galvanically isolated
<400Ω >1MΩ typical |
| Power supply: | 24VDC, 15% |
| Power supply load: | <2.5W at 25VDC |
| CE-conformity: | fulfilled |
| Terminals: | 2 x 7-pole plug-in screw terminals |
| Case: | DIN-standard case (L x W x H) 90 x 36 x 58mm |
| Mounting: | 35mm mounting rail, EN50022-35, min. distance from one instrument to the next: 5mm |
| Weight: | ~90g |
| Warranty: | 2 years |
