DML300

SERIES

DISPLAY

Type 14.7mm high, high brightness red LED Range -19999 to +99999 Decimal point position User selectable Update rate User selectable 2, 4 or 10 per second Filter User adjustable, 0 (off) to 999 seconds

LVDT INPUT

Input voltage range 0.05V to 5Vrms Gain ranges 1, 5, 10 & 100Automatic or manual gain setting facilities Non linearity < ±0.02% Temperature drift < ±0.005% FSO /
o C Stability < ±0.01% FSO after 15 minutes Transducer supply Selectable 3.0 or 5Vrms @ 25mA Supply frequency User selectable 2.5 or 5.0kHz Measurement resolution Better than 1 part in 120,000 Measurement rate 10 readings per second Measurement modes User selectable 4 wire differential or 5 wire ratiometric

ALARMS

Setpoints Alarms can be quickly adjusted during normal running via the front panel buttons or by password protected menus (user selectable) Alarms Can be flashed on the display with the measured value. Alarm menus 4, each individually user selectable for: high, low or deviation alarm action;high and low band limits (deviation action only); on and off delay timers; on and off hysteresis; and latching or non-latching

ALARM RELAYS

(DML340 ONLY) 2 off single change over (form C) contacts. Rated 1A @ 240Vac 5A @ 30Vdc Relays can be configured to be energised or de-energised in the alarm condition

TTL ALARM OUTPUTS

(DML350 ONLY) 4 off TTL open collector. Alarm outputs can be configured to be energised or de-energised in the alarm condition

STATUS (LOGIC) INPUTS

One or more of the stated functions can be user assigned to either of the two logic inputs:Tare, auto (offset) zero, display hold, analogue output hold, display max, display min, display average, display test, reset (latched) alarms, reset max/min & average (to the current measured value), ‘Enter’ button lock (disables entry to configuration menus), alarm inhibit and Fast-Cal calibration enable Logic switching The logic inputs can be switched by external volt free contacts or a TTL signal Fast-Cal calibration enable

FUNCTION KEYS

One or more of the stated functions can be user assigned to either of the two front panel function buttons: Tare, zero, display hold, display max, display min, display average, display test, reset (latched) alarms, Reset max/min & average (to the current measured value),

HIGH SPEED

This is a buffered output giving a fast response from the LVDT demodulator output. The signal

ANALOGUE OUTPUT

amplitude is dependant on the transducer excitation and the amount of sensor travel. Output filter -3dB @ 125Hz

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