MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived

 

Brief Description of MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived
 

Manufacturer : MTL Instruments

Product No. : MTL7755AC

Product type : Shunt-Diode Safety Barrier

Typical Application : RTD, Grounded

Bussed Power : No

RTDs : 3-wire

Weight : 0.14 Kg

Shipping Weight : 1.5 Kg

 

 

Analogue inputs (low-level) of MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived

 

Thermocouples and mV sources

 

The recommended barrier for thermocouples and mV sources is the MTL7760ac. This 2-channel non-polarised barrier retains the ‘earthfree’ nature of the signal and, providing the receiver’s input ‘floats’, rejects common-mode ac and dc interference up to at least 7V and is unaffected by earth faults on the primary element.

 

AC sensors, photocells, microphones and turbine flowmeters  MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived
 

 

The MTL7760ac is the recommended choice for these devices. While many of these are designated ‘simple apparatus’ and thus do not need certification, note that some ac sensors may be subject to a significant level of inductance and will therefore need to be designed and certified for hazardous-area locations.

 

Slidewire displacement transducers  MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived

 

The simplest choice is the MTL7760ac. This barrier supplies power and brings back a unipolar signal.

 

RTDs of MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived

 

For 3-wire RTDs, a single MTL7755ac barrier is the most economical choice. This is suitable for use with a floating bridge – the two leads from the bridge arms are protected by the barrier with the third (supply) lead being earthed through the barrier. The barrier has a low end-toend resistance of only 19Ω/channel to minimise span changes and its channels track within 0.15Ω (between –20°C and +60°C) to minimize zero shift with temperature.

 

If the bridge circuit is already earthed, the third barrier channel provided by an MTL7756ac is needed. For extreme accuracy, 3 channels and an earth-free bridge can be used, a configuration that cancels out the small errors due to barrier leakage.

 

Channels 1 and 2 (those between terminals 1 & 2 and 3 & 4 respectively) track to within 0.15Ω (between –20°C and 60°C).

 

4-wire constant-current circuits do not need matched barrier resistances and can be protected by two MTL7761ac barriers. If the increase in loop resistance is too great, use two MTL7755ac barriers instead.

 

Ordering Codes of MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived
 

MTL7760AC MTL7760AC MTL7755AC MTL7756AC MTL7764AC MTL7761AC MTL7766PAC MTL7728+ MTL7728P+ MTL7729P+ MTL7787+ MTL7787P+ MTL7728+ MTL7728P+ MTL7729P+ MTL7764+ MTL7767+ MTL7765AC MTL7778AC MTL7728- MTL7799 MTL7706 MTL7707+ MTL7707P+ MTL7741 MTL7742 MTL7743 MTL7744 MTL7745 MTL7787+ MTL7787P+ MTL7788+ MTL7788R+ MTL7789+ MTL7706+ MTL7707+ MTL7707P+ MTL7741 MTL77742 MTL7743 MTL7744 MTL7745 MTL7798

 

MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived
 

MTL5011B , upgraded model: MTL5511

MTL5018 , upgraded model: MTL5516C

MTL5041 , upgraded model: MTL5541

MTL5042 , upgraded model: MTL5541

MTL5043 , upgraded model: MTL5544

MTL5044 , upgraded model: MTL5544

MTL5045 , upgraded model: MTL5546

MTL5046 , upgraded model: MTL5546

MTL5074 , upgraded model: MTL5575

MTL7787+

MTL5022 , upgraded model: MTL5522

MTL5031 , upgraded model: MTL5531 or MTL5533

 

MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived

 

MTL5011B MTL5018 MTL5041 MTL5042 MTL5043 MTL5044 MTL5045 MTL5046 MTL5074

MTL702＋ MTL705＋ MTL706＋ MTL707＋ MTL707P＋ MTL708＋ MTL710＋ MTL710- MTL710AC MTL710P＋ MTL710P- MTL715＋ MTL715- MTL715P＋ MTL722＋ MTL722- MTL722P＋ MTL728＋ MTL728- MTL728AC MTL728P＋ MTL729P＋ MTL751AC MTL755AC

 

 

MTL4013 MTL4014 MTL4015 MTL4016 MTL4017 MTL4021 MTL4023 MTL4024 MTL4025 MTL4031 MTL4032 MTL4041 MTL4042 MTL4043 MTL4044 

MTL4045 MTL4046 MTL4047 MTL4053 MTL4061 MTL4073 MTL4081 MTL4215 MTL4216 MTL4220

MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived

 

MTL5011 MTL5012 MTL5014 MTL5015 MTL5017 MTL5018 MTL5021 MTL5022 MTL5023 MTL5024 MTL5025 MTL5031 MTL5040 MTL5041 MTL5043 

MTL5046 MTL5044 MTL5045 MTL5049 MTL5042 MTL5051 MTL5053 MTL5061 MTL5074 MTL5081 MTL5099 MTL5314 MTL5349 

 

MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived
 

MTL7028 MTL7055 MTL7056 MTL7060 MTL7066 MTL7087 MTL7096 MTL7099 MTL7106 MTL7122 MTL7128 MTL7129 MTL7160 MTL7161 MTL7164 

MTL7187 MTL7206 MTL7207 MTL7208 MTL7261 MTL7264 MTL7265 MTL7287 MTL7299

MTL7706 MTL7707 MTL7710 MTL7715 MTL7722 MTL7728 MTL7729 MTL7741 MTL7742 MTL7743 MTL7745 MTL7755 MTL7756 MTL7758 MTL7760 

MTL7761 MTL7764 MTL7765 MTL7766 MTL7767 MTL7778 MTL7787 MTL7788 MTL7789 MTL7796 MTL7798 MTL7799


MTL7755AC Safety Zener Barriers MTL7755AC Barrier Analogue Inputs Arrived