Altek 934

I use another brand source checker on Honeywell transmitters without a problem.

Which models? Temperature? pressure?

What are the issues?

CriscoKid,

Are you Honeywell transmitter working in Analog mode (4-20mA) or Digital mode (Digital Enhanced protocol)?

Take care with this

Regards

JP

The transmitters are pressure transmitters. They are in Digital Mode. I am having trouble testing in the field my transmitters as well as my wires connected back to my APM of the DCS TDC-3000 that we use.

CriscoKid,

Do you have a SFC (smart field communicator) honeywell or the transmitters are able to use Hart protocol?

I can recommend in order to test the wires force the output to some values using the SFC keys, remember that is digital data going to the DCS.

Also, you can use some portable hand pump in order apply pressure to the chambers of the pressure transmitters, in order to get the output according to the pressure.

If my mind dont fail in TDC 3000 from Honeywell you must reloaded (If you do some changes in range, tag, damping) the point associated to the pressure transmitter in order to can see the values in the screen.

What is the problem with the pressure transmitters?

Regards

JP

There's nothing electronic to for you to 'calibrate' on a Honeywell running DE. I suppose you could fire it up on the bench using the Altek as a DC power source, but the indicated current will oscillate all over the place because the transmitter is talking DE.

The DE protocol modulates the transmitter's current output signal in some binary encoded fashion that carries the process variable. The current signal is either 4mA (binary zero) or 20mA (binary one); the current signal doesn't vary over the 4-20mA range like it does on an analog transmitter.

To communicate with a Honeywell transmitter (in either analog or DE mode) to change any of its settings, you need either
- an STS101, 102, or 103 Smart Field communicator (SFC), a handheld device
- an MC Toolkit, a Pocket PC that has an external 'modem' that talks DE (VERY expensive)
- SCT3000, Smart Configuration Toolkit, a Windows PC program with a PCMCIA external modem

that talks DE.

Communications does LRV, URV, tag, units, zero correct, forces the output, displays true pressure, etc.

Any place big enough for a DCS and DE transmitters certainly has a DE configurator device around somewhere.