Monitors 7 Channels of 4 to 20 mA Input, One Dry Contact Input and Power Status
Isolated Inputs Prevent Ground Loops
Program up to Four 20 Digit Phone Numbers
Works with Telephone Pagers
Integral 4-Line LCD Display Wall Mount Enclosure
Wall-Mount Enclosure
商品説明
Discontinued product - please contact the Data Acquisition Dept for possible substitutes
Model OMA-VM500-4 monitors up to seven 4 to 20 mA inputs and
dials up to four phone or pager numbers if any 4 to 20 mA input
goes out of limits, if the dry contact input is not in its programmed
normal state, or if there is a power outage. The integrated voice tells
you which input is out of limits. You can call the unit at any time to hear
a report on the input and power status.
The OMA-VM500-4 is easily programmed over the phone.
Simply locate the unit in the area where you want to measure the 4 to
20 mA inputs. Plug in the phone line and the power adaptor, turn the unit
on and then call the unit from another phone or cell phone. Follow
the spoken instructions and the instructions in the operator’s
manual to program the phone numbers where you want the dialer
to call in case of an alert condition and the upper and lower limits for
the 4 to 20 mA signals. Then hang up by pressing the "0" key on your
phone until the unit says "Good-bye." The system is now
programmed and is monitoring your facility for 4 to 20 mA input and
power status.
Specifications Number of Analog Inputs: 7 Sensor Type: Self-powered 4 to 20
mA output sensors Sensor Input: Isolated, 20 Ohm input
impedance Response Time: 50 ms Accuracy: ±0.05 mA High and Low Limits on 4 to 20
mA Inputs: Programmable Scaling in Engineering Units for
each 4 to 20 mA Input:
programmable Dry-Contact Input: 12 Vdc 10 mA
source; input is normally open Telephone: Standard RJ11 phone jack connection Telephone Numbers: Stores up
to four phone numbers up to 20 digits long Personal Identification Message:
Records up to a 10-second message
over the phone Operation: Operates with answering
machine on the same phone line Display: Integral 4-line LCD Alarm Notification: Alarm siren
sounds and alarm relay closes if any
input goes out of limits Alarm Cancellation: Pushbutton
on front of the unit silences the
alarm and cancels emergency
telephone calls Alarm Relay Output: 5 A, 125 Vac Alarm Buzzer: 85 dB Power: Powered from included
120 Vac wall mount transformer
power supply Battery Backup: 4-hour
rechargeable battery backup;
20 or 30 hours optional Operating Temperature:
0 to 52°C (32 to 125°F) Electrical Connections:
Plug-in terminal block Dimensions:
117 H x 223 W x 57 mm D
(4.62 x 8.79 x 2.26") Material: ABS plastic Weight: 0.9 kg (2 lb)
注: OMEGACARE SM extended warranty program is available for models shown on this page. Ask your sales representative for full details when placing an order. OMEGACARE SM covers parts, labor and equivalent loaners.
Each unit is supplied with complete user’s manual.
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