YOKOGAWA Models 4370 µR1800 Recorder

Features

IM 4H3B1-01E

The µR1800 recorder is a precision measuring instrument that is equipped with many

outstanding features:

Compact sized, high reliability: Its compact size (depth 220mm) allows you to

install the µR1800 where only a limited space is available. In case of the pen model, a

contact-free potentiometer and a brushless-DC servomotor contribute to its high

reliability.  In case of the dot printing model, high reliability is obtained by the use of

high break down voltage solid-state relays.

Universal inputs: Inputs like DC-voltage, Thermocouple (TC), Resistance

Temperature Detector (RTD), and Digital Input (contact) can all be conveniently used.

There is no need to change any dipswitches; the type of input can be set using the key

board.

Easy interactive setting: The setting procedure has been made very easy, by using

only panel keys. The µR1800 asks you to select the desired settings, without the need

for remembering difficult setting-codes.

Large informative operator display: The large sized, VFD, display shows the

measured data (including the engineering units) or clock, and bargraph at the same time.

There are two types of bargraph available: percentage-display, and center-zero display.

Because of its 1%-resolution, the bargraph displays very accurately.

Continuous pen recording for up to four channels (pen model only):

Depending on your µR1800 model type, the µR1800 can measure up to four channels

simultaneously. This allows you to decrease the number of recorders you require.

Universal power supply (except for /P1 model): The µR1800 accepts 90 to

250VAC (except 132 to 180VAC), and 50/60Hz without any problems, or need to turn

switches. Therefore the µR1800 is compatible with a wide variety of power supplies.

High performance: The sampling speed of the µR1800 pen model is high at 125 ms,

whereas the recording cycle of the µR1800 dot printing model is 6 ch./10 seconds, or

12ch./15sec., 18ch./20sec. or 24ch./30sec. depending on the model.

The µR1800 is equipped with many functions. Special functions can be ordered as an

option. Furthermore, its power consumption is low (4pen model; 30VA under normal

operation conditions).

Easy maintenance: Because of the use of many contact-free parts, the need for

maintenance has been decreased. The µR1800 is designed in modules, which decreases

the time needed for maintenance extensively.

Closed case: The closed case of the µR1800 allows it to be used in many

environments. The front door is in accordance with DIN 40050-IP54.

Computer interface and memory card: If equipped with this option, the µR1800

can store and retrieve measured data as well as setting data, using an IC memory card or

directly from your PC. The available interface is RS-422-A.

Based on international safety standards: The µR1800 (except portable type) is

based on international safety standards, such as the IEC 348

Summary of Functions

This paragraph describes a summary of the main functions, together with a recording

example.

RECORDING

Trend: records in a way that the dots do not overlap (dot model only)

Zone: records on different bands (zones) for individual channels

Partial: expands part of the recording range for detailed examination

POC: Pen Offset Compensation: removes the time-axis offset between pens (pen model only)

PRINTOUT

Channel printout: contains channel No. besides analog recording (dot model only)

List printout: contains date, time, chart speed (1 & 2),  channel No. or tag, range, span values, scale

values, partial values and contents of messages (for example, see 5.3.4)

Manual printout: contains date and time, channel No., type of alarm, latest measured values, units (for all

channels)

Alarm printout: contains channel or tag No., type of alarm, level, mark (    for occurence,     for recover;

in case of the dot model, red and blue respectively) and alarm ON/OFF-time

Periodic printout: contains date & time, tag or channel No., POC ON mark ( ; for pen model only), unit,

scale markings (may not be printed while alarm occurs), chart speed, measured values

and recording color (for pen model) and time tick (for dot model)

Message printout: contains time and message

Recording start printout: contains time when recording starts

Chart speed change: contains time and new chart speed

SET UP List printout: contains initial settings concerning analog recording, digital printing, alarms, burnout,

RJC and options (for example, see 5.3.5)

NOTE The alarm, channel (for dot model), periodic, message, recording start and chart speed

change printout depend on the chart speed. The size of the characters varies depending

on the chart speed

UR1800

ALARM

Type of alarms: H:high limit

L: low limit

h: high difference limit

l: low difference limit

Time tick (–)*1

R: rate-of-change limit on increasing signal

r: rate-of-change limit on decreasing signal

Hysteresis: hysteresis value as a % of span which can be 0% or approx. 0.5%

Alarm output relay: when alarm occurs, the relay will be activated (optional)

Reflash: monitors repeating alarm occurrences among a group of alarms sharing the

same output relay (optional)

FAIL/Chart-end output: output relay is activated when chart reaches its end and/or when failure of

equipment occurs (optional)

INPUT

Type of inputs: TC: Thermocouple

RTD: Resistance Temperature Detector

DC-voltage

DC-current: using optional external shunt resistor

DI: Digital Input (contact)

Burnout: when TC-wire is broken, pens will move to left or right side

Filter: (signal damping) selects the time constant of signal damping (for pen model)

Moving average: selects the number of samples for moving average (for dot model)