TOYO KEIKI DEF Series Indicating Meter for Instrumentation

Product Made In Japan
Manufacturer: Toyo Keiki
Model: DEF Series

DEF-15S (Single-pointer type)
DEF-17S (Single-pointer type)
DEF-15W (Two facing pointers type)
DEF-17W (Two facing pointers type

Overview

This meter has the optimal structure and characteristics to function as an indicator for various process control systems such as power, petroleum, chemical, metal and paper plants. A state-of-the-art instrument panel receiver with an elegant, stately design and extensive functionality; this highly reliable product makes control station quality even higher.

Features DEF Series

Comparative measurements for measurement control of series such as directed standard values and measurement values can be conducted with ease because the DEF – 15W and DEF – 17W are integrated into a pair-meter structure.
Optimal for system display panels and graphic monitoring panels. Appropriate for areas with dense instrumentation as very little space is required for installation.

Characteristics

Two or more units can be neatly connected.
Tag plates are attached to the top and bottom to display information such as measuring point name and tag number.
The scale is brighter, larger, and easier to read, making it easy to perform a series of control operations.
Parts such as the zero-point adjuster and the scale plate can be replaced because the meter unit can be easily removed from the front side.

(DEF-15S & DEF-15W only)

Ordering Guide DEF Series

Models

DEF-17S Direct-acting single-pointer (Left side only)
DEF-15S Direct-acting single-pointer (Left side only)
DEF-17W Direct-acting double-pointer (Two facing pointers type)
DEF-15W Direct-acting double-pointer (Two facing pointers type)
DEF-17S Electronic single-pointer (Left side only)
DEF-15S Electronic single-pointer (Left side only)
DEF-17W Electronic double-pointer (Two facing pointers type)
DEF-15W Electronic double-pointer (Two facing pointers type)

Input Signal
Scale Specifications
Coating Color
Tag Plate Entry Characters
Mounting Posture

Circuit System	1) Direct-acting – Input signal is applied directly to the coil. 2) Electronic – Direct current amplification is performed for the input signal of the DC voltmeter and internal resistance is increased (DC voltmeter only).
Input Signal and	Input Signal	Input Resistance
	DC	Direct-acting	Electronic
	4-20 mA	50Q±20%
	10~50mA	20Q±20%
	1~5V	8kO±20%	1MQ or above
	0-10V	20kQ±20%	IMG or above
	-10~0~+10	40kQ±20%
	Inputs other than those indicated above can be manufactured upon request.
Tolerance	±1% (Dependent on maximum scale value or span)
Scale Length	15 type: 100mm 17 type: 100mm
Pointer	15S: Single-pointer (Black) 15W: Two facing pointers (Black) 17 type: Lance-shaped tip knife edge, red coating is standard (Fluorescent)
Scale Plate	White base, black scale, black characters
Thermal Behavior	Less than 1% for 10 degrees
Power Supply	Auxiliary power supply is required for electronic DC voltmeters Voltage is DC 24V±2V, approx. 20mA (per component)
Influence of Variation of Auxiliary Power Supply of Electronic DC Voltmeter	Less than 0.2% for 10%
Ambent Temperature and Humidity	-10°~50°, 40%~85%RH
Mounting Posture	Perpendicular installation, vertical (Designate installation angles when mounting at an incline)
Insulation Resistance	More than 20MQ at 500V mega (Between earth and input or power terminal)
Dielectric Strength	AC 2000V for 1 minute (50/60Hz)
Face Casing Coating	Standard: Black (7.5BG4/1.5 available upon request)
Weight	15S: 1. 3kg, 15D: 1.5kg, 15W: 1.5kg 17S: 0.9kg, 17 W: 1.1kg
Name Plate	Affixed to the inside of the case (Material: tetrone film)
Shape Dimensions	According to P3 / P4 outside dimensions.
Scale Division	According to P5 scale division table.
Tag Plate Entry Examples	According to P5 entry examples.
Other	According to JISC 1102.