产品名称：GTD-3000Tx气体检测仪
上图：标准型GTD-3000Tx
上图：插入型GTD-3000Tx
GTD-3000Tx概述
◤ 采用阻燃结构，对爆炸危险区内的有毒气体和氧气进行持续检测
◤ 采用内置微处理器实现自诊断功能
◤ 采用适于有毒气体和氧气的检测原理，打造出色的选择性
◤ 长期稳定的品质与久经验证的检测原理
◤ 内置背光LCD或OLED显示屏
◤ 使用磁棒来进行自动校准和程序设置
◤ 2级警报、单故障显示与继电器触点输出
◤ 4-20mA 直流输出信号
◤ RS-485 Modbus串行通信（可选）
◤ 配有警报装置
- 正常：绿色LED
- 警报：红色LED、蜂鸣音（95 dB）
- 故障：黄色LED
◤ 单人校准与维护
GTD-3000Tx技术参数
| 型号 | GTD-3000Tx |
| 测量气体 | 氧气/有毒气体（一氧化碳、氯气、氨气等） |
| 测量方式 | 扩散型 |
| 测量方法 | 电化学、半导体 |
| 响应时间 | T90 < 45秒 |
| 精度 | ±3% / 满量程 |
| 操作方式 | 磁棒操作 |
| 工作模式显示 | 4-LED（电源、2级警报、单故障） |
| 示值显示 | LCD显示（内置背光双线、16字符）/OLED型（可选） |
| 警报信号输出 | 250V 1A / 3-单刀单掷开关（SPST）继电器触点（2-级警报、1-故障） |
| 输出信号 |
模拟：测量信号：4-20mA 直流 维护信号：3mA 直流 校准信号：3mA 直流 故障信号：0mA 直流 数字：RS-485 Modbus（选配） |
| 电缆/距离 |
电力电缆 + 信号电缆：3-线 > 1.5平方（AWG16）/最大：2500m RS-485 数据通信电缆：1对（UL2919 RS-485）/最大：1000m |
| 导管连接 | G. Rc. NPT 1/2英寸和3/4英寸（G 3/4英寸：标准） |
| 安装类型 | 2英寸杆式安装、壁挂式安装、管式安装 |
| 工作温度 | -20℃ ~ +60℃ |
| 运行湿度 | 5 ~ 99%.RH（非冷凝） |
| 运行功率 | 18 ~ 31V 直流（常规：24V 直流）/ 200mA |
| 尺寸 | 156 x 196 x 110（宽x高x深）mm |
| 重量 | 2.0kg |
| 认证 |
防爆型（Ex d IIC T6、IP65）KCs 防爆型（Ex d IIC T6 Gb）NEPSI CE（EN 50270：2006）KC |
▷ Continuous detection of toxic gases and oxygen in explosion hazardous area with flame proof structure
▷ Self diagnosis function with built-in Microprocessor
▷ Excellent selectivity by adapting detection principle only for toxic gases & oxygen
▷ Stable quality and proved detection principle for service life
▷ Built-in back light LCD or OLED display
▷ Auto calibration and program setting with a magnet bar
▷ 2-stage alarm, 1-trouble display and relay contact output
▷ 4-20mA DC output signal
▷ Easy configuration of monitoring system by RS-485 Modbus isolated serial
data communication(Option)
▷ With the alarm unit
- Normal : Green LED
-Alarm : Red LED, Buzzer(95 dB)
-Trouble : Yellow LED
▷ Calibration and maintenance by one-man
| INTELLIGENT & LOCAL DISPLAY TYPE OXYGEN & TOXIC GAS DETECTOR | |
| Model | GTD-3000Tx |
| Measuring gas | O2 / Toxic gases (CO, CL2, NH3 & etc) |
| Measuring type | Diffusion type |
| Measuring method | Electrochemical cell, Semiconductor cell |
| Measuring range | Refer to Toxic Gas Measuring Range(166 page) |
| Response time | 〈 45 sec / 90% scale |
| Accuracy | ±3% / Full scale |
| Parameter control | Non intrusive control with a Magnet (calibration, maintenance, alarm setting) |
| Operation mode display | 4-LED (Power, 2-stage alarm, 1-trouble) |
| Measuring value display | LCD display (Built in back light 2-Line, 16 characters) / OLED Tpye (Option) |
| Alarm signal output | 250V 1A / 3-SPST relay contact (2-stage alarm, 1-trouble) |
| Output signal | Analog : Measuring signal : 4-20mA DC |
| Maintenance signal : 3mA DC | |
| Calibration signal : 3mA DC | |
| Fault signal : 0mA DC | |
| Digital : RS-485 Modbus(Option) | |
| Cable/Distance | Power + Signal cable : 3-wire 〉1.5sq (AWG16) / 2500m max |
| RS-485 data communication cable : 1pair (UL2919 RS-485) / 1000m max | |
| Conduit connection | G. Rc. NPT 1/2" & 3/4" (G 3/4" : standard) |
| Mounting type | 2" Pole mount, Wall mount, Duct mount |
| Operating temperature | -20℃ ~ +60℃ |
| Operating humidity | 5 ~ 99%.RH (non-condensing) |
| Operating power | 18 ~ 31V DC (24V DC normal) / 200mA |
| Dimensions | 156 x 196 x 110 (W x H x D)mm |
| Weight | 2.0kg |
| Approval | Explosion proof type (Ex d IIC T6, IP65) KCs |
| Explosion proof type (Ex d IIC T6 Gb) NEPSI | |
| CE (EN 50270:2006) |
